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From Karnataka Open Educational Resources
→Concept #5: Cyclic Quadrilateral
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==== Concept #5: Cyclic Quadrilateral ====
==== Concept #5: Cyclic Quadrilateral ====
−A quadrilateral ABCD is called cyclic if all four vertices of it lie on a circle.In a cyclic quadrilateral the sum of opposite interior angles is 180 degrees.If the sum of a pair of opposite angles of a quadrilateral is 180, the quadrilateral is cyclic.In a cyclic quadrilateral the exterior angle is equal to interior opposite angle
+A quadrilateral ABCD is called cyclic if all four vertices of it lie on a circle.In a cyclic quadrilateral the sum of opposite interior angles is 180 degrees.If the sum of a pair of opposite angles of a quadrilateral is 180, the quadrilateral is cyclic.In a cyclic quadrilateral the exterior angle is equal to interior opposite angle.
=====Activities=====
=====Activities=====
−====== [[Circles and lines activity 6|Cyclic quadrilateral]] ======
+====== [[Cyclic quadrilateral]] ======
−====== [[Circles and lines activity 7|Properties of cyclic quadrilateral]] ======
+====== [[Properties of cyclic quadrilateral]] ======
==== Concept #6 Constructions in circles ====
==== Concept #6 Constructions in circles ====
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===== Activities =====
===== Activities =====
−====== [[Circles and lines activity 4|Construction of Direct common tangent]] ======
+====== [[Construction of direct common tangent]] ======
−====== [[Circles and lines activity 5|Construction of Transverse common tangent]] ======
+====== [[Construction of transverse common tangent]] ======
+====== [[Construction of cyclic quadrilateral]] ======
=====[[Class10 circles tangents problems|Solved problems/ key questions (earlier was hints for problems).]]=====
=====[[Class10 circles tangents problems|Solved problems/ key questions (earlier was hints for problems).]]=====
